DE3424748C2 - - Google Patents

Description

The invention relates generically to a tear-off block a plurality of carrier bags made of thermoplastic film, which tote bags have a front wall, a rear wall and handles Have punched holes in the area of an upper filling opening, wherein the individual carrier bags to the tear-off block with the help of at least an interlocking weld on an interlocking portion are united and can be torn off from the tear-off block by means of a row of perforations and on at least one of the walls that have an upper fill opening edge form a reinforcement in the area of their handle-forming punching kungscut from plastic film is glued. Generally are such tear-off blocks also with suspension devices, for example in the form of special punched holes or hanging holes for opening thread on assigned holding devices.

In the known generic tear-off blocks, the carrier bags a sine shaped filling opening edge (DE-OS 32 22 376) or a straight filling opening edge (DE-OS 25 26 014) can point one over the reinforcement blank upwards protruding edge strip of the front wall and / or rear wall as Blocking section are used. This is expensive. It also bothers that tote bags with different shapes Opening edge not blocked with the same technical means that can. The carrier bags blocked with the front and rear wall can be locked in the closed position was not easily filled, rather they have to next be torn off their tear-off block.

The invention has for its object a generic From Tear block so that less material for blocking is necessary and that carrier bags with differently shaped opening can be blocked with the same technical means.

To achieve this object, the invention teaches that the reinforcement Cut just one of the walls over the edge of the filler opening with the interlocking portion projecting up the row of perforations points and along this is tearable that in the block the wall with the protruding blocking portion forms the rear wall. in the generally both walls are made with a reinforcement blank equips, but only one of them in the manner described an interlocking section is extended. In particular, there are ver Different options for further training that differed in Connect the individual designs of the individual carrier bags. you are Subject of the subordinate claims 2 to 4. - The invention is based on the knowledge that also from carrier bags that are in the Front wall, and in the rear wall the handle-forming cut-outs have and in the manner described with reinforcement blanks are provided, in a simple manner and regardless of the training tear-off blocks can be formed, if the lock-up welder in the above extended Parts of the reinforcement blanks are arranged, which as a result Interlocking sections work. The invention further uses the fact that the individual carrier bags, carrier bag for stretcher pocket in the tear-off block can be easily manipulated and filled, if only the back wall of the individual in the manner described Carrying bags with such, with a blocking section  equipped reinforcement blank is provided, the Ver has block weld connection. It is particularly advantageous that tear-off blocks according to the invention also in a simple manner under one saving of bag material can be produced. A special one simple method of making the tear-off blocks is the subject of claim 5.

In the following, the invention is based on only one embodiment Example illustrating the drawing explained in more detail. It shows gene in a schematic representation

Fig. 1 shows a section of an inventive tear-off, in perspective,

Fig. 2 in comparison with FIG. 1 on an enlarged scale a vertical section through a single carrier bag from the tear-off of FIG. 1,

3 corresponding to FIG. 2 shows another embodiment block. A single carry bag for an inventive tear,

Fig. 4 corresponding to FIG. 1 a section of a tear block of bags according Fig. 3,

Fig. 5 is a schematic representation for explaining a procedural method for the production of carrier bags for tear-off blocks according to the invention and

Fig. 6 shows a variant of the scheme of Fig. 5.

Tear-off blocks 1 , as explained with reference to FIGS . 1 to 4, are made up of a plurality of carrier bags 2 made of thermoplastic film. The carrier bags 2 have a front wall 3 , a rear wall 4 and handle-forming cutouts 5 in the region of an upper fill opening 6 . These punched holes 5 are located in the same way, in the front wall 3 and rear wall 4 . The individual carrier bags 2 are combined to the tear-off block 1 with the aid of at least one blocking welding connection 7 , which is located at a blocking section 8 in the United States. They can be torn off the tear-off block 1 by means of a row of perforations 9 . The front wall 3 and the rear wall 4 have a fill opening edge 10 over their entire width.

In the exemplary embodiment 4 are on both walls 3, rand on A filler 10 in the region of its handle-forming punched-5 Verstär kung blanks 11, 12 of plastic film adhered. The reinforcement cut 11 of only one of the walls 3, 4 protrudes beyond the fill opening edge 10 with the blocking section 8 , which has the row of perforations 9 and can be torn off along this. In the block, the wall with the overlapping blocking section 8 forms the rear wall 4 . In order to make it clear that only the rear wall 4 has a protruding reinforcement blank 11 , the number of these walls in FIG. 1 which indicate the lines in the area of the blocking blanks is only half as large as the lines indicated next to it, which mark the filler opening edge 10 of front wall 3 and rear wall 4 can be seen, although for drawing reasons the number of lines in total does not take into account the number of carrier bags 2 stacked in the block, because the carrier bags 2 are in the tear-off block 1 close together and the plastic film is extremely thin.

In the exemplary embodiment and according to a preferred embodiment, the above reinforcing section 11 is glued on the inside to the associated wall 4 of the carrying bag 2 .

Figs. 1 and 2 belong to the embodiment with bags 2 which have a straight Einfüllöffnungsrand 10th From a ver equal contemplation of Fig. 1 and 2, it removes that before standing reinforcing blanks 11 a row of perforations 9 in ways that coincides with the straight Einfüllöffnungsrand 10th The situation in the embodiment according to FIGS. 3 and 4 is different . Here, the carrier bags 2 have a sinusoidal filler opening edge 10 , which delimits a central sinus wave region with handle-forming punchings 5 . From a comparative examination of these figures, it can be seen that the front reinforcement blank 11 has a perforation row 9 which runs like a secant below the upper section 13 of the filler opening edge 10 and that the section 13 of the associated wall 4 projecting above the row of perforations 9 is free, ie without gluing, against which the reinforcement blank 11 lies.

In the exemplary embodiment, the interlocking welded connection is designed as a heating mandrel welded connection 7 .

FIGS. 5 and 6 schematically illustrate measures to be a Sonders simple process for producing the tear-described blocks include 1.

First Take from the Fig. 5 in that an upper edge strip 14 of a double-layered, is intermittently or continuously in the longitudinal direction of the moving plastic film web 15 is folded, that are glued to the two, characterized exposed inner sides of reinforcement blanks 11, 12, wherein immediately after a Zurückklap pen of the upper edge strip 14, the handle-forming punchings 5 are introduced and then bag-forming cross-cut welds 16 are carried out. Fig. 5 shows that embodiment of such a procedure in which two carrier bags 2 are simultaneously formed side by side, initially only the upper layer of the double-layer plastic film web 15 is cut open in its longitudinal center and the two upper edge strips 14 are simultaneously folded over and only after Applying the reinforcement cuts 11, 12, the lower layer of the plastic film web 15 is cut open in its longitudinal center. It is understood that the ferti gene carrier bags 2 stacked and welded with the help of an interlocking weld 7 or with the help of several interlocking welded joints 7 . It can be seen in Fig. 5 that the above reinforcing blanks 11 are applied to or onto the folded-over edge strips 14 , with a protruding interlocking blank 11 , consequently the interlocking welded connections 7 can be attached in the interlocking sections 8 after stacking. - Fig. 6 makes it clear that the same can be done if it is carrying bags that have a sinusoidal filler opening edge 10 .

Although has been illustrated in FIGS. 5 and 6 that protrude the reinforcing blanks 11 on the folded-over edge strip 14 and the folded-over edge strips 14 are applied, one can also proceed conversely, nonetheless, namely not cut initially in the longitudinal direction of the plastic film 15 with the two still a double reinforcement blank 12 bil denden reinforcement blanks 12 provided. This is followed by the longitudinal cut of the lower and upper layers of the plastic film web 15 . Subsequently, after the upper edge strips 14 have been folded over into the central region, a correspondingly broad reinforcement cut 11 is glued on, which can then be divided into two reinforcement cuts 11 with blocking sections 8 . So that the corresponding supernatant in the form of a blocking section 8 comes to pass, it is necessary in this case, however, to vary the longitudinal fold seam 17 so that the blocking section 8 is ent. Only then are the handle-forming cutouts 5 and the separating cut in the area of the blocking blank 8 placed .

Claims (6)

1. tear-off block from a plurality of carrier bags made of thermoplastic plastic film, which carrier bags

• a front wall,
• a back wall and
  handle-forming punched-out areas in the area of an upper filler opening

have, the individual carrier bags to the tear-off block combined with the aid of at least one blocking weld connection at a Ver blocking section and tearable by means of a row of perforations from the tear-off block, and on at least one of the walls, which form an upper filler opening edge, a reinforcement blank made of plastic film is glued in the area of its handle-forming punch-out is characterized in that the reinforcing blank ( 11 ) of only one ( 4 ) of the walls ( 3, 4 ) protrudes beyond the fill opening edge ( 10 ) with the blocking section ( 8 ) which has the row of perforations ( 9 ) and can be torn off along this is and that in the block ( 1 ) the wall ( 4 ) with the above Ver blocking section ( 11 ) forms the rear wall. 2. Tear-off block according to claim 1, characterized in that the above reinforcing blank ( 11 ) is glued on the inside to the assigned wall ( 4 ) of the carrying bag ( 2 ). 3. Tear-off block according to one of claims 1 or 2 in the embodiment with carrier bags which have a straight filler opening edge, characterized in that the row of perforations ( 9 ) of the above reinforcing blank ( 11 ) coincides with the filler opening edge ( 10 ). 4. Tear-off block according to one of claims 1 or 2 in the embodiment with carrier bags which have a sinusoidal filler opening edge which delimits a central sine wave region with grip-forming punchings, characterized in that the perforation row ( 9 ) of the above reinforcement blank ( 11 ) Secant-like below the upper section ( 13 ) of the filler opening edge ( 10 ) and that the part ( 13 ) projecting over the perforation row ( 9 ) of the associated wall ( 4 ) lies freely against the reinforcement blank ( 11 ). 5. Process for the production of tear-off blocks according to one of the An Proverbs 1 to 4, with an upper edge strip of a double-layer, plastic film moving in the longitudinal direction is folded over the two exposed inside reinforcement blanks be glued on, immediately after the upper one has been folded back Edge strip introduced the handle-forming punchings and there after bag-forming cross cut welds are carried out, ins special in the embodiment in which two stretcher at the same time pockets are formed side by side, initially only the upper layer of the double-layer plastic sheet in its longitudinal center is cut and the two upper edge strips at the same time be folded and only after the reinforcement has been applied cut the lower layer of the plastic film web in its longitudinal center is cut open, furthermore the finished carrier bags ge stacks and are blocked with blocking welds because characterized in that the foregoing ver reinforcement cuts on the folded edge strips or on the folded edge strips are applied, with over standing blocking section.